Special-shaped belt recoil 7-shaped male die anti-wire-rising structure

Abstract

The utility model discloses a special-shaped belt recoil 7-shaped male die anti-wire-rising structure which comprises a base plate, a connecting end is integrally formed at the top of the base plate, the inclination degree of the connecting end is 5 degrees, and a first step and a second step are arranged at the two ends of the top of the connecting end respectively. After the base plate is installed, the R angle of the material is in contact with the side face of the connecting end, the connecting end is long, waste can be clamped through the first step and the second step above the connecting end and cannot move upwards, the steps on the side face of the material cannot be scraped, the machining effect is good, and the machining efficiency is high. The shape of the waste material is changed through the step on the connecting end, copper wires are prevented from being scraped out, copper wires are prevented from leaking out of a product packaged by the lead frame, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the field of mechanical moulds, in particular to a wire-raising prevention structure of a special-shaped 7-shaped convex mould with recoil. Background Art

[0002] Semiconductor lead frame stamping processing, mainly the lead frame of power devices, the thickness of the copper tape in the carrier and welding pin area is different. The current situation is that the carrier is thicker than the pin, so a positioning template is needed during processing;

[0003] Although the existing positioning template belt has high hardness and can avoid bending under pressure, there are still other problems during use. For example, when the top of the template is parallel, the shape of the waste affects the product quality when punching special-shaped strips. If there are copper wires inside, it is easy for the copper wires to be scrapped out. The copper wires will cause the device to short-circuit and lead to scrapping or fire. The practicality is poor. In order to solve the above problems, we propose a special-shaped strip recoil 7-shaped punch anti-wire structure. Utility Model Content

[0004] The utility model aims to provide a special-shaped belt recoil 7-shaped punch anti-wire structure, which has the advantage of being able to achieve good processing effect.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: a special-shaped anti-wire structure with a recoil-shaped punch, including a base plate, a connecting end integrally formed on the top of the base plate, a first step and a second step are respectively provided at the two ends of the top of the connecting end, and the connecting end is an inclined surface close to the base plate, and the inclination is 5°.

[0006] In summary, the utility model has the following beneficial effects:

[0007] The utility model uses the R angle of the material to contact the side surface of the connection end after the substrate is installed. Since the length of the connection end is relatively long, the waste material can be clamped by the first step and the second step above so that it will not move upward, and thus the side steps of the material will not be scraped, thereby achieving a good processing effect. The shape of the waste material is changed by the steps on the connection end to prevent the scraping of copper wire, thereby avoiding the leakage of copper wire from the product after the lead frame is packaged, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a three-dimensional diagram of the structure of the utility model.

[0009] Figure numerals: 1, substrate; 2, connection end; 3, first step; 4, second step. DETAILED DESCRIPTION

[0010] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0011] Embodiment 1:

[0012] refer to Figure 1 A special-shaped 7-shaped punch anti-wire structure with recoil includes a substrate 1, a connecting end 2 is integrally formed on the top of the substrate 1, and a first step 3 and a second step 4 are respectively provided at both ends of the top of the connecting end 2. The connecting end 2 is an inclined surface near the substrate 1, and the inclination is 5°, and a height difference of the inclined surface is formed. When the substrate 1 is installed, the R angle of the material contacts the side of the connecting end 2. Since the length of the connecting end 2 is long, the waste material can be clamped by the first step 3 and the second step 4 above so that it will not move upward, so that it will not scrape the side steps of the material, and a good processing effect can be achieved. The shape of the waste material is changed by the step 3 on the connecting end 2 to prevent the scraping of copper wires, and to avoid the leakage of copper wires from the product after the lead frame is packaged, and the safety is high.

[0013] Brief description of the use process: After the base plate 1 is installed, the R corner of the material contacts the side of the connection end 2. Since the connection end 2 is long, the waste material can be caught by the first step 3 and the second step 4 above so that it will not move upward, and thus will not scrape the side steps of the material.

[0014] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A special-shaped 7-shaped punch anti-threading structure with recoil, comprising a base plate (1), characterized in that: The top of the base plate (1) is integrally formed with a connection end (2), the two ends of the top of the connection end (2) are respectively provided with a first step (3) and a second step (4), and the connection end (2) is an inclined surface close to the base plate (1), and the inclination is 5°.

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